Tools

The Secure CommsOS™ for mission-critical operations

a self-hosted server tracking what you read/watch/listen/play, powering a global distributed community federating via ActivityPub and (a bit of) ATProto.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Federated single-user microblogging software

Webmail built for the 21st Century. A modern, self-hosted email client for Stalwart Mail Server powered by the JMAP protocol. Email, calendar, contacts and files. Fast, private, and open source.

Notifuse is an open-source & modern emailing platform

The software powering Stoat

FreeScout — Free self-hosted help desk & shared mailbox (Zendesk / Help Scout alternative)

Nextcloud Talk – chat, video & audio calls for Nextcloud

A federated, text-based social network with a Gemini frontend

Open source video conferencing app powered by LiveKit.

Your self-hosted, globally interconnected microblogging community

Fast, highly extensible, and event driven SMTP server.

Modern, open source, self-hosted customer support desk. Single binary app.

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

The Roundcube Webmail suite

ActivityPub (https://www.w3.org/TR/activitypub/) server for individual users and small groups.

Fully-featured Matrix client for Web, iOS & Android.

Lightweight, self-hosted, open-source chat server with voice, video, text, and screen sharing. Built for small groups who want privacy, simplicity, and full control over their data.

A completely free and open interplanetary-microblogging platform

Real time collaboration (RTC) server.

A simple CalDAV (calendar) and CardDAV (contact) server.

A complete web conferencing system for virtual classes and more!

Mail-Archiver is a web application for archiving, searching, and exporting emails from multiple accounts. Featuring folder sync, attachment support, mailbox migration and a dashboard.

SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface.

Preserve your emails with this open-source self-hostable email archive! This repository is a read-only mirror, please go to the gitlab repo at https://gitlab.com/Dacid99/eonvelope to contribute code.

Live Support chat for your website.

Scalable no-SPOF IMAP/POP3 mail server.

Synapse: Matrix homeserver written in Python/Twisted + Rust

Mumble is an open-source, low-latency, high quality voice chat software.

All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon.

Mobile messaging platform with a focus on performance and scalability.

Dovecot mail server

Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

Easy to use but advanced IP PBX system, VoIP gateway and conference server.

XMPP instant messaging server.

Modular IRC server written in C++ for Linux, BSD, Windows, and macOS.

Email (IMAP/POP3), contacts and calendar server.

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Movim - Decentralized social platform